One of those " difficult birds" is the critically endangered regent honeyeater.

其中一种“难研究的鸟”是极度濒危的王摄蜜鸟。

" All our study species are quite challenging to study for various reasons, mostly because they're really rare and highly mobile." One of those " difficult birds" is the critically endangered regent honeyeater.

“由于各种原因， 我们所有研究物种的研究都非常具有挑战性，主要是因为它们非常稀有且流动性强。 ” 这些“困难的鸟类” 之一是极度濒危的摄政吸蜜鸟。